I can't manage to allow sounds to play on Firefox, no matter what. Why?

Firefox decided to not play any sound on my laptop, Spotify works on itself, if I open it in Firefox it doesn't. Same with YouTube and everything else. I use Artix Linux, I double-booted with Windows and it works on it, just not on Artix for some reason. I have tried to allow acces to it, even redownloaded everything, nothing worked. It's not the biggest problem, since there are subtitles, but it would be good if it worked.